Table S1 Stomach contents composition for Coelorinchus aspercephalus from the Chatham Rise. Bold text lines show the point estimates, and 95% confidence intervals estimated by bootstrap resampling, of the percentage frequency of occurrence (%F), percentage weight (%W), percentage number (%N), and percentage Index of Relative Importance (%IRI), for prey grouped at the taxonomic levels used in the multivariate analyses (number of stomachs = 201). Under each prey group, the normal text lines show the point estimates of the dietary statistics when calculated for all prey types (i.e., at full resolution), with the abiotic material and prey types that could not be allocated to one of the prey groups (so excluded from multivariate analyses) listed at the bottom of the table (number of stomachs = 209)
%F / %W / %N / %IRIPolychaeta / 28.9 (20.8–37.7) / 4.3 (2.1–7.7) / 6.7 (3.5–12.3) / 3.9 (1.8–7.5)
Amphinomidae
Chloeia inermis / 1.4 / 0.2 / 0.1 / <0.1
Aphroditidae
Aphrodita spp. / 1.9 / 1.0 / 0.2 / <0.1
Eunicidae
Eunice spp. / 0.5 / <0.1 / 0.2 / <0.1
Eunicidae unidentified / 0.5 / 0.1 / 0.1 / <0.1
Goniadidae / 0.5 / 0.1 / <0.1 / <0.1
Lumbrineridae / 4.3 / 0.1 / 0.5 / <0.1
Nephtyidae
Aglaophamus spp. / 0.5 / <0.1 / <0.1 / <0.1
Onuphidae / 1.0 / 0.1 / 0.2 / <0.1
Sigalionidae / 0.5 / <0.1 / <0.1 / <0.1
Polychaeta unidentified / 24.9 / 2.8 / 4.8 / 3.1
Copepoda / 10.0 (4.9–16.1) / 0.1 (0.04–0.2) / 1.9 (0.8–3.7) / 0.2 (0.1–0.7)
Calanoida unidentified / 9.6 / 0.1 / 1.6 / 0.3
Isopoda / 15.4 (8.0–23.2) / 6.4 (1.3–16.1) / 2.4 (1.1–4.5) / 1.7 (0.3–5.0)
Serolidae
Brucerolis spp. / 13.9 / 5.7 / 1.8 / 1.7
Valvifera
Idoteidae / 0.5 / <0.1 / <0.1 / <0.1
Valvifera unidentified / 0.5 / <0.1 / <0.1 / <0.1
Anthuridea / 0.5 / <0.1 / <0.1 / <0.1
Isopoda unidentified / 5.7 / 0.6 / 0.5 / 0.1
Euphausiacea / 6.0 (0.6–13.1) / 5.6 (0.01–21.9) / 12.2 (0.1–30.9) / 1.3 (0.01–8.4)
Euphausiidae
Euphausia similis / 0.5 / 0.1 / <0.1 / <0.1
Euphausiacea unidentified / 5.3 / 5.2 / 10.0 / 1.3
Natant decapoda / 37.8 (28.1–47.2) / 7.6 (2.7–15.6) / 7.5 (4.0–13.2) / 7.1 (2.8–14.5)
Crangonidae / 20.1 / 2.2 / 2.1 / 1.5
Pandalidae
Notopandalus magnoculus / 6.7 / 2.9 / 1.6 / 0.5
Pasiphaeidae
Pasiphaea aff. sivado / 0.5 / 0.2 / <0.1 / <0.1
Sergestidae
Sergestes arcticus / 0.5 / 0.1 / 0.1 / <0.1
Natant decapoda unidentified / 16.8 / 1.7 / 2.4 / 1.1
Astacidea / 1.5 (0–4.3) / 0.9 (0–3.0) / 0.2 (0–0.5) / <0.1 (0–0.2)
Nephropidae
Metanephrops challengeri / 1.4 / 0.9 / 0.1 / <0.1
Anomura / 64.2 (52.2–74.0) / 49.2 (34.3–63.4) / 22.7 (15.1–31.3) / 57.2 (41.4–68.3)
Galatheidae
Munida gracilis / 58.9 / 43.4 / 17.5 / 59.0
Phylladiorhynchus pusillus / 1.0 / 0.4 / 0.3 / <0.1
Paguroidea / 4.8 / 0.2 / 1.8 / 0.2
Parapaguridae
Sympagurus dimorphus / 2.9 / 3.4 / 0.3 / 0.2
Brachyura / 18.9 (9.8–29.6) / 14.8 (3.1–31.6) / 6.8 (1.4–17.4) / 5.1 (0.6–18.2)
Atelecyclidae
Trichopeltarion fantasticum / 1.4 / 0.1 / 0.1 / <0.1
Goneplacidae
Neommatocarcinus huttoni / 7.2 / 11.7 / 4.8 / 2.0
Pycnoplax (Carcinoplax) victoriensis / 4.8 / 1.6 / 0.5 / 0.2
Homolidae
Dagnaudus petterdi / 0.5 / 0.3 / <0.1 / <0.1
Portunidae
Nectocarcinus antarcticus (megalopae) / 1.9 / 0.4 / 0.6 / <0.1
Brachyura unidentified / 5.3 / 0.4 / 0.5 / 0.1
Corophiidea / 4.5 (1.0–9.5) / <0.1 (0.01–0.1) / 1.1 (0.2–3.1) / <0.1 (0.01–0.3)
Caprellidae / 0.5 / <0.1 / <0.1 / <0.1
Isaeidae / 1.0 / <0.1 / 0.4 / <0.1
Photidae / 2.4 / <0.1 / 0.6 / <0.1
Corophiidea unidentified / 3.8 / <0.1 / 0.9 / <0.1
Gammaridea / 61.2 (50.0–17.3) / 1.5 (0.7–3.0) / 21.4 (15.0–29.0) / 17.4 (11.2–24.0)
Ampeliscidae / 2.4 / <0.1 / 0.3 / <0.1
Eusiridae / 0.5 / <0.1 / 0.3 / <0.1
Ischyroceridae / 1.9 / <0.1 / 0.6 / <0.1
Lysianassidae / 5.3 / 0.1 / 0.6 / <0.1
Oedicerotidae / 0.5 / <0.1 / <0.1 / <0.1
Phoxocephalidae / 0.5 / <0.1 / <0.1 / <0.1
Gammaridea unidentified / 51.2 / 1.3 / 15.5 / 14.2
Hyperiidea / 2.0 (0–5.1) / <0.1 (0–0.1) / 3.1 (0–10.9) / 0.1 (0–0.6)
Cyllopodidae
Cyllopus magellanicus / 0.5 / <0.1 / 0.1 / <0.1
Hyperiidae
Themisto australis / 1.0 / <0.1 / 2.2 / <0.1
Vibiliidae
Vibilia stebbingi / 0.5 / 0.1 / 0.2 / <0.1
Other Arthropoda / 12.4 (6.9–19.2) / 0.9 (0.1–3.8) / 1.7 (0.7–3.5) / 0.4 (0.1–1.4)
Stomatopoda
Tetrasquillidae
Heterosquilloides n. sp. / 1.0 / 0.7 / 0.1 / <0.1
Cumacea / 1.9 / <0.1 / 0.2 / <0.1
Leptostraca / 1.9 / <0.1 / 0.2 / <0.1
Mysidae / 0.5 / <0.1 / <0.1 / <0.1
Ostracoda / 4.8 / <0.1 / 0.7 / 0.1
Tanaidacea / 1.9 / <0.1 / 0.2 / <0.1
Osteichthyes / 8.0 (3.9–12.7) / 4.2 (1.2–8.0) / 0.9 (0.4–1.6) / 0.5 (0.1–1.4)
Callionymidae
Foetorepus phasis / 1.9 / <0.1 / 0.2 / <0.1
Macrouridae
Coelorinchus oliverianus / 0.5 / 0.5 / <0.1 / <0.1
Percophidae
Hemerocoetes spp. / 1.9 / 1.8 / 0.2 / 0.1
Pleuronectidae
Azygopus pinnifasciatus / 1.0 / 0.1 / 0.1 / <0.1
Scales / 3.4 / <0.1 / 0.5 / <0.1
Otoliths / 0.5 / <0.1 / <0.1 / <0.1
Fishes unidentified / 6.7 / 1.0 / 0.6 / 0.2
Mollusca / 5.5 (2.0–10.6) / 0.1 (0.02–0.1) / 0.7 (0.2–1.4) / 0.1 (0.01–0.2)
Bivalvia / 3.4 / <0.1 / 0.3 / <0.1
Gastropoda / 3.8 / 0.1 / 0.4 / <0.1
Scaphopoda / 1.9 / <0.1 / 0.2 / <0.1
Shell fragments / 1.0 / 0.3 / 0.1 / <0.1
Salpida / 2.5 (0–5.7) / 1.3 (0–4.4) / 0.4 (0–1.4) / 0.1 (0–0.3)
Salpidae unidentified / 2.4 / 1.2 / 0.4 / 0.1
Echinodermata / 31.3 (21.7–41.2) / 3.2 (1.4–5.7) / 9.2 (4.9–15.6) / 4.6 (2.1–8.5)
Echinoidea / 1.9 / <0.1 / 0.2 / <0.1
Ophiuroidea
Ophiacanthidae / 28.7 / 2.4 / 6.4 / 4.2
Ophiuroidea unidentified / 1.4 / 0.6 / 1.2 / <0.1
Other
Amphipoda unidentified / 7.7 / 0.1 / 1.6 / 0.2
Eumalacostraca unidentified / 5.3 / 0.1 / 0.6 / 0.1
Crustacea unidentified / 49.3 / 1.8 / 9.2 / 8.9
Protista / 0.5 / <0.1 / <0.1 / <0.1
Pterygota (fly) / 0.5 / <0.1 / <0.1 / <0.1
Sand / 1.5 / <0.1 / 0.1 / <0.1
Unidentifiable / 11.5 / 1.3 / 1.4 / 0.5
Total / N = 201 / 271 g / N = 2013 / –
Total / N = 209 / 288 g / N = 2441 / –
1
Table S2 Stomach contents composition for Coelorinchus bollonsi from the Chatham Rise. Bold text lines show the point estimates, and 95% confidence intervals estimated by bootstrap resampling, of the percentage frequency of occurrence (%F), percentage weight (%W), percentage number (%N), and percentage Index of Relative Importance (%IRI), for prey grouped at the taxonomic levels used in the multivariate analyses (number of stomachs = 295). Under each prey group, the normal text lines show the point estimates of the dietary statistics when calculated for all prey types (i.e., at full resolution), with the abiotic material and prey types that could not be allocated to one of the prey groups (so excluded from multivariate analyses) listed at the bottom of the table (number of stomachs = 320)
%F / %W / %N / %IRIPolychaeta / 78.6 (73.8–86.0) / 54.1 (43.1–68.2) / 43.5 (37.8–51.3) / 72.9 (65.2–81.7)
Amphinomidae
Chloeia inermis / 0.6 / 0.7 / 0.1 / <0.1
Aphroditidae
Aphrodita spp. / 4.1 / 12.3 / 0.7 / 1.4
Eunicidae
Eunice spp. / 1.9 / 10.5 / 0.4 / 0.5
Goniadidae
Goniada spp / 1.6 / 2.7 / 0.3 / 0.1
Goniadidae unidentified / 2.2 / 0.1 / 0.4 / <0.1
Lumbrineridae / 19.1 / 1.0 / 5.2 / 3.1
Nephtyidae
Aglaophamus spp. / 1.9 / 0.1 / 0.4 / <0.1
Oenonidae / 1.3 / 0.1 / 0.5 / <0.1
Onuphidae
Kinbergonuphis proalopus / 27.2 / 7.1 / 11.7 / 13.3
Rhamphobrachium averincevi / 12.8 / 8.7 / 5.2 / 4.6
Onuphidae unidentified / 3.8 / 0.5 / 1.0 / 0.1
Sigalionidae / 7.5 / 0.9 / 1.3 / 0.4
Maldanidae / 5.3 / 0.3 / 1.1 / 0.2
Polychaeta unidentified / 43.8 / 7.3 / 10.4 / 20.2
Copepoda / 8.5 (5.0–13.4) / 0.1 (0.04–0.14) / 1.9 (1.0–2.9) / 0.2 (0.04–0.4)
Calanoida unidentified / 8.1 / 0.1 / 1.6 / 0.4
Isopoda / 10.5 (6.6–16.0) / 1.2 (0.3–2.5) / 3.0 (1.5–5.6) / 0.4 (0.1–1.0)
Arcturidae
Arcturus spp. / 0.9 / <0.1 / 0.2 / <0.1
Serolidae
Brucerolis spp. / 4.7 / 0.5 / 0.9 / 0.2
Anthuridea / 2.8 / <0.1 / 1.1 / 0.1
Isopoda unidentified / 5.3 / 0.6 / 0.9 / 0.2
Euphausiacea / 2.0 (0–5.9) / 0.1 (0–0.4) / 0.5 (0–1.6) / <0.1 (0–0.1)
Euphausiacea unidentified / 1.9 / 0.1 / 0.4 / <0.1
Natant decapoda / 10.5 (6.1–15.4) / 1.2 (0.5–2.3) / 2.0 (1.1–2.7) / 0.3 (0.1–0.7)
Campylonotidae
Camplyonotus rathbonae / 0.3 / 0.1 / 0.1 / <0.1
Crangonidae / 0.6 / <0.1 / 0.1 / <0.1
Glyphocrangonidae
Glyphocrangon spp. / 0.3 / 0.1 / 0.1 / <0.1
Pasiphaeidae
Pasiphaea aff. sivado / 0.3 / 0.1 / 0.1 / <0.1
Sergestidae
Sergestes arcticus / 0.3 / <0.1 / 0.1 / <0.1
Natant decapoda unidentified / 9.1 / 0.9 / 1.5 / 0.6
Astacidea / 0.7 (0–1.8) / 0.4 (0–1.2) / 0.1 (0–0.3) / <0.1 (0–0.02)
Nephropidae
Metanephrops challengeri / 0.6 / 0.4 / 0.1 / <0.1
Anomura / 7.5 (3.1–10.6) / 5.3 (1.4–10.5) / 2.2 (0.8–3.6) / 0.5 (0.1–1.3)
Galatheidae
Munida gracilis / 7.2 / 5.1 / 1.9 / 1.3
Paguroidea / 0.3 / <0.1 / 0.1 / <0.1
Brachyura / 29.2 (20.5–37.2) / 28.4 (16.8–37.4) / 9.2 (5.4–12.9) / 10.4 (4.6–16.0)
Goneplacidae
Neommatocarcinus huttoni / 2.5 / 3.4 / 1.1 / 0.3
Pycnoplax (Carcinoplax) victoriensis / 16.9 / 23.3 / 4.4 / 12.2
Brachyura unidentified / 9.7 / 0.6 / 2.5 / 0.8
Gammaridea / 48.5 (39.2–56.4) / 1.8 (1.0–3.2) / 27.2 (19.6–34.9) / 13.3 (7.8–19.4)
Hyperiidea / 2.0 (0.4–4.7) / <0.1 (0.01–0.04) / 0.4 (0.1–0.8) / <0.1 (0.01–0.03)
Cyllopodidae
Cyllopus magellanicus / 0.6 / <0.1 / 0.1 / <0.1
Vibiliidae
Vibilia stebbingi / 1.3 / <0.1 / 0.2 / <0.1
Other Arthropoda / 8.8 (5.1–13.5) / 1.6 (0.1–4.4) / 2.0 (1.1–3.0) / 0.3 (0.1–0.7)
Cumacea / 1.3 / <0.1 / 0.3 / <0.1
Leptostraca / 1.9 / 0.1 / 0.4 / <0.1
Ostracoda / 2.8 / <0.1 / 0.5 / <0.1
Pycnogonida / 0.3 / <0.1 / 0.1 / <0.1
Stomatopoda
Tetrasquillidae
Heterosquilloides n. sp. / 1.6 / 1.4 / 0.4 / 0.1
Tanaidacea / 1.3 / <0.1 / 0.2 / <0.1
Osteichthyes / 2.0 (0.3–4.4) / 0.2 (0.01–0.4) / 0.4 (0.1–0.8) / <0.1 (0.01–0.1)
Moridae
Notophycis marginata / 0.6 / <0.1 / 0.1 / <0.1
Scales / 0.6 / <0.1 / 0.1 / <0.1
Fishes unidentified / 2.8 / 0.2 / 0.5 / 0.1
Cephalopoda / 0.7 (0–2.0) / 0.3 (0–0.9) / 0.1 (0–0.4) / <0.1 (0–0.02)
Octopoda / 0.6 / 0.3 / 0.1 / <0.1
Other Mollusca / 5.8 (2.0–8.6) / 0.3 (0.02–0.6) / 1.6 (0.4–2.5) / 0.1 (0.01–0.2)
Bivalvia / 1.6 / 0.2 / 0.3 / <0.1
Gastropoda
Philinidae
Philine spp. / 2.8 / <0.1 / 0.7 / 0.1
Gastropoda unidentified / 1.6 / 0.1 / 0.4 / <0.1
Scaphopoda / 0.3 / <0.1 / 0.1 / <0.1
Salpida / 3.1 (0.7–4.7) / 2.3 (0.3–4.4) / 0.8 (0.2–1.4) / 0.1 (0.01–0.2)
Salpidae unidentified / 2.8 / 2.2 / 0.7 / 0.2
Echinodermata / 24.8 (18.4–32.4) / 1.4 (0.6–2.6) / 5.0 (3.8–6.7) / 1.5 (0.9–2.5)
Echinoidea unidentified / 1.3 / <0.1 / 0.2 / <0.1
Ophiuroidea
Ophiactidae / 0.3 / 0.1 / 0.1 / <0.1
Ophiuridae / 0.3 / <0.1 / 0.1 / <0.1
Ophiacanthidae / 1.3 / <0.1 / 0.3 / <0.1
Ophiuroidea unidentified / 21.3 / 1.2 / 3.8 / 2.8
Cnidaria / 0.7 (0–2.4) / 0.2 (0–1.0) / 0.1 (0–0.4) / <0.1 (0–0.03)
Anthozoa / 0.3 / 0.2 / 0.1 / <0.1
Hydrozoa / 0.3 / <0.1 / 0.1 / <0.1
Porifera / 0.3 (0–1.5) / <0.1 (0–0.1) / 0.1 (0–0.3) / <0.1 (0–0.01)
Porifera unidentified / 0.3 / <0.1 / 0.1 / <0.1
Priapulida / 0.3 (0–1.6) / 1.2 (0–5.9) / 0.1 (0–0.3) / <0.1 (0–0.1)
Priapulida unidentified / 0.3 / 1.2 / 0.1 / <0.1
Ascidiacea / 0.7 (0–2.2) / 0.1 (0–0.3) / 0.1 (0–0.4) / <0.1 (0–0.01)
Ascidiacea unidentified / 0.6 / 0.1 / 0.1 / <0.1
Other
Amphipoda unidentified / 6.9 / 0.1 / 2.2 / 0.4
Eumalacostraca unidentified / 4.4 / <0.1 / 0.8 / 0.1
Crustacea unidentified / 30.6 / 1.4 / 6.9 / 6.7
Rocks / 0.3 / 0.2 / 0.1 / <0.1
Sand / 1.3 / <0.1 / 0.2 / <0.1
Unidentifiable / 10.6 / 1.7 / 1.8 / 1.0
Total / N = 295 / 369 g / N = 1668 / –
Total / N = 320 / 384 g / N = 1976 / –
1
Table S3 Stomach contents composition for Coelorinchus oliverianus from the Chatham Rise. Bold text lines show the point estimates, and 95% confidence intervals estimated by bootstrap resampling, of the percentage frequency of occurrence (%F), percentage weight (%W), percentage number (%N), and percentage Index of Relative Importance (%IRI), for prey grouped at the taxonomic levels used in the multivariate analyses (number of stomachs = 160). Under each prey group, the normal text lines show the point estimates of the dietary statistics when calculated for all prey types (i.e., at full resolution), with the abiotic material and prey types that could not be allocated to one of the prey groups (so excluded from multivariate analyses) listed at the bottom of the table (number of stomachs = 164)
%F / %W / %N / %IRIPolychaeta / 12.9 (6.4–20.4) / 2.6 (0.9–5.3) / 0.5 (0.2–0.9) / 0.3 (0.1–0.8)
Goniadidae / 0.6 / <0.1 / <0.1 / <0.1
Oenonidae / 0.6 / <0.1 / <0.1 / <0.1
Onuphidae / 3.1 / 0.7 / 0.1 / <0.1
Kinbergonuphis proalopus / 0.6 / <0.1 / <0.1 / <0.1
Onuphidae unidentified / 0.6 / <0.1 / <0.1 / <0.1
Sigalionidae / 9.2 / 1.3 / 0.3 / 0.1
Polychaeta unidentified / 0.6 / <0.1 / <0.1 / <0.1
Copepoda / 99.4 (97.8–100.0) / 36.8 (24.7–52.2) / 91.2 (87.4–93.9) / 90.1 (84.0–93.7)
Calanoida unidentified / 98.8 / 31.5 / 68.5 / 73.3
Isopoda / 3.7 (0.6–8.1) / 6.2 (0.1–20.1) / 0.2 (0.1–0.5) / 0.2 (0.01–1.0)
Serolidae
Brucerolis spp. / 1.8 / 4.0 / 0.1 / 0.1
Isopoda unidentified / 2.4 / 1.3 / 0.1 / <0.1
Euphausiacea / 1.8 (0–5.1) / 0.5 (0–2.0) / 0.1 (0–0.2) / <0.1 (0–0.1)
Euphausiacea unidentified / 1.8 / 0.4 / <0.1 / <0.1
Natant Decapoda / 24.5 (14.4–36.0) / 28.7 (13.1–43.4) / 1.0 (0.5–1.6) / 5.2 (1.6–10.5)
Crangonidae / 0.6 / 0.3 / <0.1 / <0.1
Pandalidae
Notopandalus magnoculus / 1.8 / 3.6 / <0.1 / 0.1
Pasiphaeidae
Pasiphaea aff. sivado / 3.7 / 7.8 / 0.1 / 0.2
Sergestidae
Sergestes arcticus / 3.1 / 7.1 / 0.1 / 0.2
Natant decapoda unidentified / 17.1 / 5.7 / 0.5 / 0.8
Anomura / 0.6 (0–2.9) / 0.1 (0–0.2) / <0.1 (0–0.1) / <0.1 (0–0.01)
Galatheidae
Phylladiorhynchus pusillus / 0.6 / <0.1 / <0.1 / <0.1
Brachyura / 4.3 (0–9.1) / 1.8 (0–4.7) / 0.2 (0–0.4) / 0.1 (0–0.3)
Goneplacidae
Pycnoplax (Carcinoplax) victoriensis / 1.8 / 1.3 / <0.1 / <0.1
Brachyura unidentified / 2.4 / 0.3 / 0.1 / <0.1
Gammaridea / 41.1 (30.1–53.1) / 5.3 (2.9–9.0) / 2.5 (1.5–3.8) / 2.3 (1.0–4.3)
Corophioidea / 1.2 / 0.1 / <0.1 / <0.1
Cyphocarididae
Cyphocaris challengeri / 3.7 / 0.3 / 0.1 / <0.1
Stenothoidae / 0.6 / <0.1 / <0.1 / <0.1
Gammaridea unidentified / 39.0 / 4.8 / 1.8 / 1.9
Hyperiidea / 20.3 (12.2–28.8) / 2.7 (1.2–5.3) / 1.5 (0.7–2.8) / 0.6 (0.2–1.5)
Cyllopodidae
Cyllopus magellanicus / 6.1 / 0.9 / 0.5 / 0.1
Hyperiidae
Themisto australis / 6.1 / 0.5 / 0.3 / <0.1
Proscinidae
Proscina sp. / 0.6 / <0.1 / <0.1 / <0.1
Vibiliidae
Vibilia stebbingi / 7.3 / 0.7 / 0.3 / 0.1
Hyperiidea unidentified / 1.8 / 0.1 / <0.1 / <0.1
Other Arthropoda / 27.0 (18.2–36.2) / 3.7 (1.7–7.1) / 1.7 (0.9–3.1) / 1.0 (0.4–2.2)
Mysida
Metamblyops sp. / 0.6 / 0.7 / 0.3 / <0.1
Petalophthalmus sp. / 4.3 / 0.9 / 0.2 / <0.1
Cumacea / 9.2 / 0.5 / 0.3 / 0.1
Leptostraca / 0.6 / <0.1 / <0.1 / <0.1
Ostracoda / 15.2 / 1.0 / 0.5 / 0.2
Osteichthyes / 4.9 (0.7–9.5) / 6.3 (0.1–19.5) / 0.2 (0.02–0.4) / 0.2 (0.01–1.2)
Myctophidae
Lampanyctodes hectoris / 0.6 / 2.7 / <0.1 / <0.1
Myctophidae unidentified / 0.6 / 0.7 / <0.1 / <0.1
Scales / 1.2 / 0.1 / <0.1 / <0.1
Otoliths / 0.6 / <0.1 / <0.1 / <0.1
Fishes unidentified / 1.8 / 1.9 / <0.1 / <0.1
Cephalopoda / 2.5 (0–6.5) / 3.8 (0–15.6) / 0.1 (0–0.2) / 0.1 (0–0.5)
Histioteuthidae
Histioteuthis spp. / 0.6 / 3.1 / <0.1 / <0.1
Cephalopoda unidentified / 1.8 / 0.1 / <0.1 / <0.1
Other Mollusca / 0.6 (0–2.5) / 0.4 (0–2.0) / <0.1 (0–0.1) / <0.1 (0–0.03)
Ranellidae
Fusitriton magellanicus (protoconchs) / 0.6 / 0.4 / <0.1 / <0.1
Salpida / 2.5 (0–7.9) / 1.2 (0–4.1) / 1.0 (0–3.9) / <0.1 (0–0.4)
Salpidae unidentified / 2.4 / 1.0 / 0.7 / <0.1
Foraminfera / 0.6 / <0.1 / <0.1 / <0.1
Foraminfera unidentified / 0.6 / <0.1 / <0.1 / <0.1
Other
Crustacea unidentified / 85.4 / 11.1 / 24.6 / 22.6
Unidentifiable / 10.4 / 2.7 / 0.2 / 0.2
Total / N = 160 / 22 g / N = 3392 / –
Total / N = 164 / 28 g / N = 7187 / –
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Table S4 Stomach contents composition for Lepidorhynchus denticulatus from the Chatham Rise. Bold text lines show the point estimates, and 95% confidence intervals estimated by bootstrap resampling, of the percentage frequency of occurrence (%F), percentage weight (%W), percentage number (%N), and percentage Index of Relative Importance (%IRI), for prey grouped at the taxonomic levels used in the multivariate analyses (number of stomachs = 317). Under each prey group, the normal text lines show the point estimates of the dietary statistics when calculated for all prey types (i.e., at full resolution), with the abiotic material and prey types that could not be allocated to one of the prey groups (so excluded from multivariate analyses) listed at the bottom of the table (number of stomachs = 356)
%F / %W / %N / %IRIPolychaeta / 3.8 (1.5–7.0) / 1.2 (0.04–4.1) / 0.4 (0.1–0.7) / 0.1 (0.01–0.4)
Amphinomidae / 0.8 / 0.6 / 0.1 / <0.1
Chloeia inermis / 0.3 / <0.1 / <0.1 / <0.1
Onuphidae / 0.8 / <0.1 / 0.1 / <0.1
Sigalionidae / 1.7 / 0.5 / 0.1 / <0.1
Polychaeta unidentified / 0.8 / 0.6 / 0.1 / <0.1
Chaetognatha / 1.5 (0.3–3.4) / <0.1 (0.01–0.1) / 0.1 (0.02–0.3) / <0.1 (<0.01–0.02)
Chaetognatha unidentified / 1.4 / <0.1 / 0.1 / <0.1
Copepoda / 57.4 (48.8–66.0) / 2.5 (1.5–4.9) / 46.0 (31.8–59.1) / 37.1 (23.8–51.5)
Calanoida unidentified / 54.8 / 2.2 / 36.3 / 35.5
Isopoda / 1.2 (0–3.1) / 0.5 (0–1.9) / 0.1 (0–0.4) / <0.1 (0–0.1)
Serolidae
Brucerolis spp. / 0.3 / 0.3 / <0.1 / <0.1
Isopoda unidentified / 0.8 / 0.2 / 0.1 / <0.1
Euphausiacea / 9.4 (4.8–14.6) / 1.1 (0.3–2.8) / 4.7 (1.2–10.7) / 0.7 (0.1–2.4)
Euphausiacea unidentified / 9.0 / 1.0 / 3.7 / 0.7
Natant decapoda / 36.8 (27.9–45.5) / 68.6 (43.4–86.3) / 8.9 (4.8–14.4) / 38.0 (21.3–53.7)
Crangonidae / 0.8 / 0.2 / 0.1 / <0.1
Oplophoridae
Oplophorus novaezeelandiae / 0.8 / 1.0 / 0.1 / <0.1
Pandalidae
Notopandalus magnoculus / 0.6 / 0.3 / <0.1 / <0.1
Pasiphaeidae
Pasiphaea aff. sivado / 17.7 / 42.5 / 3.4 / 13.7
Sergestidae
Sergestes arcticus / 7.0 / 5.8 / 0.7 / 0.8
Natant decapoda unidentified / 19.4 / 10.6 / 2.7 / 4.3
Anomura / 2.4 (0.6–4.8) / 0.8 (0.1–3.9) / 0.2 (0.1–0.5) / <0.1 (0.01–0.2)
Galatheidae
Munida gracilis / 1.4 / 0.7 / 0.1 / <0.1
Galatheidae unidentified / 0.6 / <0.1 / <0.1 / <0.1
Gammaridea / 33.5 (26.4–41.1) / 0.9 (0.5–1.8) / 5.4 (3.4–8.2) / 2.8 (1.5–5.2)
Cyphocarididae
Cyphocaris challengeri / 11.8 / 0.2 / 1.6 / 0.4
Cyphocaris richardi / 0.3 / <0.1 / 0.2 / <0.1
Gammaridea unidentified / 25.0 / 0.6 / 2.8 / 1.5
Hyperiidea / 32.9 (24.9–41.5) / 2.5 (1.1–5.6) / 13.5 (6.9–22.1) / 7.0 (2.9–14.1)
Bougisidae
Primno macropa / 0.3 / <0.1 / <0.1 / <0.1
Cylopodidae
Cyllopus magellanicus / 5.9 / 0.2 / 1.2 / 0.1
Hyperiidae
Hyperoche mediterranea / 0.6 / <0.1 / <0.1 / <0.1
Themisto australis / 21.6 / 1.9 / 8.4 / 3.7
Vibiliidae
Vibilia stebbingi / 5.3 / 0.1 / 1.0 / 0.1
Other Arthropoda / 9.1 (5.2–13.8) / 0.8 (0.2–2.0) / 1.5 (0.6–3.2) / 0.3 (0.1–0.8)
Cumacea / 0.3 / <0.1 / <0.1 / <0.1
Mysida
Mysidae
Boreomysis spp. / 0.6 / <0.1 / <0.1 / <0.1
Petalophthalmidae
Petalophthalmus spp. / 3.1 / 0.4 / 0.7 / 0.1
Mysida unidentified / 1.1 / 0.1 / 0.1 / <0.1
Ostracoda / 3.7 / 0.1 / 0.3 / <0.1
Osteichthyes / 25.9 (19.2–32.6) / 20.3 (2.3–43.1) / 13.1 (3.7–26.5) / 11.5 (2.9–22.9)
Macrouridae
Coelorinchus oliverianus / 0.6 / 0.1 / <0.1 / <0.1
Myctophidae
Lampanyctodes hectoris / 0.6 / 0.3 / 0.1 / <0.1
Lampanyctus spp. / 0.8 / 9.2 / 0.1 / 0.1
Myctophidae unidentified / 1.7 / 0.3 / 0.2 / <0.1
Photichthyidae
Photichthys argenteus / 0.3 / 6.8 / <0.1 / <0.1
Fish eggs / 1.4 / <0.1 / 0.5 / <0.1
Scales / 2.0 / 0.2 / 7.6 / 0.3
Fishes unidentified / 18.0 / 0.9 / 1.9 / 0.9
Cephalopoda / 29.1 (21.9–36.8) / 0.6 (0.4–1.2) / 5.6 (3.4–8.7) / 2.4 (1.2–4.5)
Sepiolidae / 0.3 / <0.1 / <0.1 / <0.1
Teuthoidea / 19.7 / 0.4 / 2.8 / 1.1
Cephalopoda unidentified / 7.9 / 0.2 / 1.5 / 0.2
Other Mollusca / 2.9 (0.9–5.7) / 0.1 (0.02–0.3) / 0.5 (0.1–1.1) / <0.1 (0.01–0.1)
Gastropoda
Ranellinae
Fusitriton magellanicus (protoconchs) / 2.5 / 0.1 / 0.4 / <0.1
Gastropoda unidentified / 0.3 / <0.1 / <0.1 / <0.1
Other
Crustacea unidentified / 73.3 / 9.1 / 20.1 / 36.0
Unidentifiable / 8.2 / 2.7 / 0.6 / 0.5
Total / N = 317 / 176 g / N = 2589 / –
Total / N = 356 / 208 g / N = 4675 / –
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